Parameter identification for induction motor simulation

✍ Scribed by A. Bellini; A. De Carli; M. La Cava

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 362 KB
• Volume: 12
• Category: Article
• ISSN: 0005-1098
• DOI: 10.1016/0005-1098(76)90059-5

✦ Synopsis

SummarymThe simulation of squirrel-cage induction motors is very useful to design frequency-controlled a.c. drives. For this purpose the parameters of the induction motor must assume suitable values.

Parameter obtained by the open and short circuit tests give generally unsatisfactory results. In this paper it is therefore proposed to apply a suitable identification technique.

By assuming the two axes equations as the model of the motor, the parameters are worked out by a curve fitting procedure of the steady state torque and current characteristics.

Due to the nonlinearities in the model equations an iteratire procedure is proposed which attains the absolute minimum.

The parameter can be therefore worked out with a satisfactory accuracy as confirmed by the test presented in this paper.

Nomenclature

p pole pairs V r.m.s, value of line-voltage to, supply voltage frequency to, rotor current frequency R,, R, stator and rotor resistances L,, L, stator and rotor inductances L, mutual inductance TQ motor torque C r.m.s, value of the stator current